Since Us Weekly broke news last month — with adorable photo evidence — of Jason Segel and Michelle Williams' unexpected new relationship, the couple has stayed quiet about their surprisingly serious relationship.

But Segel, 32, finally piped up when asked by Extra about Williams, 31.

Joked Segel: "I think I might even be becoming a man-man… potentially!"

In all seriousness, insiders told Us that Segel "has been trying to be more of a grown-up lately" to show his "commitment" to Williams, single mom to daughter Matilda. "He is taking care of himself more, exercising, eating right and dressing better. Basically, not acting like a frat boy anymore."